Dr. John H. O\'Neill
- Gender: Male
- Experience: 35 years
- Graduated from: Des Moines University Of Osteopathic Medicine And Health Sciences
- Graduation year: 1986
- Sole propriator: No
- NPI: 1265445233
Dr. John H. O\'Neill JR. DO
Hospitalist
He is located at 4755 Ogletown Stanton Road Suite 5A43 in Newark, DE 19718. Can help patients with the following: Anemia, Atherosclerosis, Bladder Control, Diarrhea, Influenza, Obesity. His National Provider Identifier (NPI) number is 1265445233. Appointment can be made via the phone number (302) 623-0188. He is affiliated with 3 practices and 1 hospitals.
Conditions treated
Dr. John H. O\'Neill, being an hospitalist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. John H. O\'Neill.
- Abdominal Pain
- Acute Pain
- Anemia
- Arthritis
- Asthma
- Atherosclerosis
- Bladder Control
- Chest Pain
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Common Cold
- Constipation
- Cystitis
- Diarrhea
- Edema
- Fever
- Gastroesophageal Reflux Disease (GERD)
- General Care
- Headache
- Heart Disease
- Hiatal Hernia
- High Blood Pressure
- Hot Flashes
- Hyperlipidemia
- Hyponatremia
- Influenza
- Inguinal Hernia
- Migraine
- Nausea and Vomiting
- Obesity
- Osteoporosis
- Peptic Ulcer
- Prescription Refill
- Urethritis
- Urinary Tract Infection (UTI)
Procedures Performed by Dr. John H. O\'Neill
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. John H. O\'Neill as in-network for the following 2026 plans.
Health plans
AmeriHealth Caritas Next
Network data as of Sep 11, 2026, as reported by the insurer.
Show all 8 plans from AmeriHealth Caritas Next
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| AmeriHealth Caritas Next Bronze Essential + No Referrals | HMO · Bronze | Preferred | Accepting new patients |
| AmeriHealth Caritas Next Bronze Premier + No Referrals | HMO · Expanded Bronze | Preferred | Accepting new patients |
| AmeriHealth Caritas Next Bronze Signature + No Referrals | HMO · Expanded Bronze | Preferred | Accepting new patients |
| AmeriHealth Caritas Next Gold Premier + No Referrals | HMO · Gold | Preferred | Accepting new patients |
| AmeriHealth Caritas Next Gold Signature + No Referrals | HMO · Gold | Preferred | Accepting new patients |
| AmeriHealth Caritas Next Silver Essential + No Referrals | HMO · Silver | Preferred | Accepting new patients |
| AmeriHealth Caritas Next Silver Premier + No Referrals | HMO · Silver | Preferred | Accepting new patients |
| AmeriHealth Caritas Next Silver Signature + No Referrals | HMO · Silver | Preferred | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. John H. O\'Neill is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. John H. O\'Neill is enrolled to bill Medicare as a Practitioner - Internal Medicine .
Bills through: Christiana Care Health Services Inc
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Studies
DES MOINES UNIVERSITY OF OSTEOPATHIC MEDICINE AND HEALTH SCIENCES
Graduated in 1986Additional Specialities
- Internist
Affiliated practices
Looking for more Hospitalists?
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- Gender: Male
- Address: Suite 5A43 4755 Ogletown Stanton Road Newark, 19718, DE
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- Address: Suite 5A43 4755 Ogletown Stanton Road Newark, 19718, DE
- Gender: Male
- Address: Suite 5A43 4755 Ogletown Stanton Road Newark, 19718, DE
- Gender: Female
- Address: 4755 Ogletown Stanton Road Newark, 19718, DE
- Gender: Male
- Address: 4755 Ogletown Stanton Road Newark, 19718, DE
- Gender: Female
- Address: Suite 5A43 4755 Ogletown Stanton Road Newark, 19718, DE
- Gender: Female
- Address: Suite 5A43 4755 Ogletown Stanton Road Newark, 19718, DE
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- Address: 750 East Adams Street Syracuse, 13210, NY
- Gender: Female
- Address: Suite 5A43 4755 Ogletown Stanton Road Newark, 19718, DE
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- Address: 1945 State Route 33 Neptune, 7753, NJ
Questions & Answers
Where can you meet with Dr. John H. O\'Neill?
Dr. John H. O\'Neill's office is located at 4755 Ogletown Stanton Road Suite 5A43 in Newark, DE 19718.
Does Dr. John H. O\'Neill accept patients with AmeriHealth Caritas Next?
Yes, Dr. John H. O\'Neill is listed in-network for AmeriHealth Caritas Next through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Does Dr. John H. O\'Neill have affiliation with practices?
Dr. John H. O\'Neill is affiliated with Christiana Care Health System. For the full list of practices see this list.
What conditions does Dr. John H. O\'Neill treat?
Dr. John H. O\'Neill provides treatment for Anemia, Atherosclerosis, Bladder Control, Diarrhea, Influenza, Obesity. For the full list see this list.
Has Dr. John H. O\'Neill affiliation with hospitals?
Dr. John H. O\'Neill is affiliated with CHRISTIANA HOSPITAL.